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Lawrance_YXLiao
1c5c585741
* fix(runtime): bound write_file execution-failure observations * fix(runtime): preserve write_file error prefixes * test(runtime): trim write_file prefix assertions * refactor(runtime): drop redundant exception suffix for permission/directory write errors Address Copilot review on #3133: the PermissionError and IsADirectoryError branches now return self-contained, non-redundant messages (e.g. "Error: Permission denied writing to file: /mnt/...") via direct truncation, instead of going through _format_write_file_error which appended a duplicate ": PermissionError: permission denied" suffix. OSError, SandboxError and the generic Exception branches keep the unified "Failed to write file '{path}': {ExceptionType}: {detail}" format so the model still sees a stable, machine-readable error class. Removes the now-unused message= parameter from _format_write_file_error, keeping a single code path. Truncation contract (<= 2000 chars) and host-path sanitization unchanged. * fix(runtime): handle write_file sandbox init errors Initialize the requested path before sandbox setup so early sandbox failures can still return a bounded write_file error. Add a regression test for sandbox initialization failures. * style(test): format sandbox security tests